Might have found my answer; appears only 250, 280 and coupe models had wooden trim, others (200,230,200D,220D,240D) did not. Not sure about the 240D 3.0 though.

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Tomas, Sweden
1966 Mercedes Benz 230S with OM617.912, automatic. Disk brakes from W108
1983 Mercedes Benz 300TD grey, OM617.912 and 5-speed manual
1983 Mercedes Benz 300TD blue 7-seater, OM617.912 and 5-speed manual